on 2009-1-8 9:30 Miao Xie wrote:> I tested fair group scheduler on my hyper-threading x86_64 box(2 CPU * 2 HT)> and found the deviation of the groups' CPU usage was larger than 2.6.26> when *offline* a CPU or do hotplug frequently. It is less than 1% On 2.6.26，but> On current kernel, it is often greater than 4%, even than 10% by accident.>

This patch fixed the following problems. But the regression above still exists.